Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
import android.app.Activity;
import android.content.res.Resources;
import android.util.TypedValue;
import android.view.View;
import android.view.ViewGroup;
import android.view.animation.Animation;
import android.view.animation.Transformation;

public class Main {
    public static void expand(final View v, Activity activity) {
        v.measure(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
        Resources r = activity.getResources();
        final float px = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 200, r.getDisplayMetrics());
        final int targtetHeight = (int) px;//200;//v.getMeasuredHeight();

        v.getLayoutParams().height = 0;
        v.setVisibility(View.VISIBLE);
        Animation a = new Animation() {
            @Override
            protected void applyTransformation(float interpolatedTime, Transformation t) {
                v.getLayoutParams().height = interpolatedTime == 1 ? ((int) px)//200//ViewGroup.LayoutParams.WRAP_CONTENT
                        : (int) (targtetHeight * interpolatedTime);
                v.requestLayout();
            }

            @Override
            public boolean willChangeBounds() {
                return true;
            }
        };

        a.setDuration((int) (targtetHeight / v.getContext().getResources().getDisplayMetrics().density));
        v.startAnimation(a);
    }
}